Log4Net 在发生错误后未登录数据库如何登录文件
Log4Net is not logging in database after error how ever its logging in file
我有一个奇怪的问题正在进入 log4net。
我已经使用 AdoDotNet appender 启用了 log4net。它一般工作正常并登录到数据库但有时它突然停止工作并且不登录到数据库。但是当我们将级别信息从信息更改为调试并再次调试为信息时，它开始工作并登录到数据库。
我做了进一步的研究并启用了 log4net 内部调试，还并行添加了 RollingFileAppenderInfoErrorLogger appender 以跟踪问题是来自 AdonetAppender 还是 log4net general。
所以现在当这个问题出现在 log4net 内部调试时，它会抛出以下错误并且它会停止登录数据库，除非我在 log4net 配置中更改某些内容 但它会继续登录文件追加器
这个错误是传输错误所以我的问题是为什么 log4net 在出现异常后没有启动但仍在登录文件？我们如何在这种异常后重新启动数据库日志记录。
log4net:ERROR [AdoNetAppender] ErrorCode: GenericFailure. Failed in DoAppend
System.Data.SqlClient.SqlException (0x80131904): A transport-level error has occurred when sending the request to the server. (provider: Named Pipes Provider, error: 0 - The specified network name is no longer available.) ---> System.ComponentModel.Win32Exception (0x80004005): The specified network name is no longer available
at System.Data.SqlClient.TdsParser.TdsExecuteRPC(_SqlRPC[] rpcArray, Int32 timeout, Boolean inSchema, SqlNotificationRequest notificationRequest, TdsParserStateObject stateObj, Boolean isCommandProc, Boolean sync, TaskCompletionSource`1 completion, Int32 startRpc, Int32 startParam)
at System.Data.SqlClient.SqlCommand.RunExecuteReaderTds(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream, Boolean async, Int32 timeout, Task& task, Boolean asyncWrite, SqlDataReader ds)
at System.Data.SqlClient.SqlCommand.RunExecuteReader(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream, String method, TaskCompletionSource`1 completion, Int32 timeout, Task& task, Boolean asyncWrite)
at System.Data.SqlClient.SqlCommand.InternalExecuteNonQuery(TaskCompletionSource`1 completion, String methodName, Boolean sendToPipe, Int32 timeout, Boolean asyncWrite)
at System.Data.SqlClient.SqlCommand.ExecuteNonQuery()
at log4net.Appender.AdoNetAppender.SendBuffer(IDbTransaction dbTran, LoggingEvent[] events)
at log4net.Appender.AdoNetAppender.SendBuffer(LoggingEvent[] events)
at log4net.Appender.BufferingAppenderSkeleton.Append(LoggingEvent loggingEvent)
at log4net.Appender.AppenderSkeleton.DoAppend(LoggingEvent loggingEvent)
ClientConnectionId:a1efe1ac-6986-4a15-a233-7dcfee4ef60e
Error Number:64,State:0,Class:20
下面是我的 log4net 配置文件。
<?xml version="1.0"?>
<configuration>
<log4net debug="true">
<appender name="DebugAppender" type="log4net.Appender.DebugAppender">
<layout type="log4net.Layout.PatternLayout">
<conversionPattern value="%-4timestamp [%thread] %-5level %logger - %message%newline"/>
</layout>
</appender>
<appender name="ConsoleAppender" type="log4net.Appender.ConsoleAppender">
<layout type="log4net.Layout.PatternLayout">
<conversionPattern value="%-4timestamp [%thread] %-5level %logger - %message%newline"/>
</layout>
</appender>
<appender name="RollingFileAppenderInfoErrorLogger" type="log4net.Appender.RollingFileAppender">
<file value="D:\Halo\Logs\LoaderService.log" />
<appendToFile value="true" />
<rollingStyle value="Size" />
<maxSizeRollBackups value="10" />
<maximumFileSize value="10240KB" />
<staticLogFileName value="true" />
<countDirection value="1"/>
<threshold value="INFO"/>
<layout type="log4net.Layout.PatternLayout">
<conversionPattern value="%date %level %logger - %message%newline%newline" />
</layout>
<filter type="log4net.Filter.LevelRangeFilter">
<param name="LevelMin" value="INFO"/>
<param name="LevelMax" value="Error"/>
</filter>
</appender>
<appender name="AdoNetAppender" type="log4net.Appender.AdoNetAppender">
<bufferSize value="1"/>
<usetransactions value="false"/>
<connectionType value="System.Data.SqlClient.SqlConnection, System.Data, Version=1.0.3300.0, Culture=neutral, PublicKeyToken=b77a5c561934e089"/>
<connectionStringName value="HaloAutomationLog"/>
<commandText value="INSERT INTO [HaloAMS].[Logging].[ApplicationLog] ([LogDate],[Thread],[LogLevel],[Logger],[LogMessage],[Exception]) VALUES (@log_date, @thread, @log_level, @logger, @message, @exception)"/>
<parameter>
<parameterName value="@log_date"/>
<dbType value="DateTime"/>
<layout type="log4net.Layout.RawTimeStampLayout"/>
</parameter>
<parameter>
<parameterName value="@thread"/>
<dbType value="String"/>
<size value="255"/>
<layout type="log4net.Layout.PatternLayout">
<conversionPattern value="%thread"/>
</layout>
</parameter>
<parameter>
<parameterName value="@log_level"/>
<dbType value="String"/>
<size value="50"/>
<layout type="log4net.Layout.PatternLayout">
<conversionPattern value="%level"/>
</layout>
</parameter>
<parameter>
<parameterName value="@logger"/>
<dbType value="String"/>
<size value="255"/>
<layout type="log4net.Layout.PatternLayout">
<conversionPattern value="%logger"/>
</layout>
</parameter>
<parameter>
<parameterName value="@message"/>
<dbType value="String"/>
<size value="-1"/>
<layout type="log4net.Layout.PatternLayout">
<conversionPattern value="%message"/>
</layout>
</parameter>
<parameter>
<parameterName value="@exception"/>
<dbType value="String"/>
<size value="2000"/>
<layout type="log4net.Layout.ExceptionLayout"/>
</parameter>
</appender>
<root>
<level value="INFO" />
<appender-ref ref="RollingFileAppenderInfoErrorLogger" />
<appender-ref ref="AdoNetAppender"/>
</root>
</log4net>
</configuration>
您可以添加
<reconnectonerror value="True" />
到您的 appender 配置或添加：
ConnectRetryCount=X; //where x is the times you want to reconnection
到您的连接字符串
我有一个奇怪的问题正在进入 log4net。 我已经使用 AdoDotNet appender 启用了 log4net。它一般工作正常并登录到数据库但有时它突然停止工作并且不登录到数据库。但是当我们将级别信息从信息更改为调试并再次调试为信息时，它开始工作并登录到数据库。 我做了进一步的研究并启用了 log4net 内部调试，还并行添加了 RollingFileAppenderInfoErrorLogger appender 以跟踪问题是来自 AdonetAppender 还是 log4net general。
所以现在当这个问题出现在 log4net 内部调试时，它会抛出以下错误并且它会停止登录数据库，除非我在 log4net 配置中更改某些内容 但它会继续登录文件追加器
这个错误是传输错误所以我的问题是为什么 log4net 在出现异常后没有启动但仍在登录文件？我们如何在这种异常后重新启动数据库日志记录。
log4net:ERROR [AdoNetAppender] ErrorCode: GenericFailure. Failed in DoAppend
System.Data.SqlClient.SqlException (0x80131904): A transport-level error has occurred when sending the request to the server. (provider: Named Pipes Provider, error: 0 - The specified network name is no longer available.) ---> System.ComponentModel.Win32Exception (0x80004005): The specified network name is no longer available
at System.Data.SqlClient.TdsParser.TdsExecuteRPC(_SqlRPC[] rpcArray, Int32 timeout, Boolean inSchema, SqlNotificationRequest notificationRequest, TdsParserStateObject stateObj, Boolean isCommandProc, Boolean sync, TaskCompletionSource`1 completion, Int32 startRpc, Int32 startParam)
at System.Data.SqlClient.SqlCommand.RunExecuteReaderTds(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream, Boolean async, Int32 timeout, Task& task, Boolean asyncWrite, SqlDataReader ds)
at System.Data.SqlClient.SqlCommand.RunExecuteReader(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream, String method, TaskCompletionSource`1 completion, Int32 timeout, Task& task, Boolean asyncWrite)
at System.Data.SqlClient.SqlCommand.InternalExecuteNonQuery(TaskCompletionSource`1 completion, String methodName, Boolean sendToPipe, Int32 timeout, Boolean asyncWrite)
at System.Data.SqlClient.SqlCommand.ExecuteNonQuery()
at log4net.Appender.AdoNetAppender.SendBuffer(IDbTransaction dbTran, LoggingEvent[] events)
at log4net.Appender.AdoNetAppender.SendBuffer(LoggingEvent[] events)
at log4net.Appender.BufferingAppenderSkeleton.Append(LoggingEvent loggingEvent)
at log4net.Appender.AppenderSkeleton.DoAppend(LoggingEvent loggingEvent)
ClientConnectionId:a1efe1ac-6986-4a15-a233-7dcfee4ef60e
Error Number:64,State:0,Class:20
下面是我的 log4net 配置文件。
<?xml version="1.0"?>
<configuration>
<log4net debug="true">
<appender name="DebugAppender" type="log4net.Appender.DebugAppender">
<layout type="log4net.Layout.PatternLayout">
<conversionPattern value="%-4timestamp [%thread] %-5level %logger - %message%newline"/>
</layout>
</appender>
<appender name="ConsoleAppender" type="log4net.Appender.ConsoleAppender">
<layout type="log4net.Layout.PatternLayout">
<conversionPattern value="%-4timestamp [%thread] %-5level %logger - %message%newline"/>
</layout>
</appender>
<appender name="RollingFileAppenderInfoErrorLogger" type="log4net.Appender.RollingFileAppender">
<file value="D:\Halo\Logs\LoaderService.log" />
<appendToFile value="true" />
<rollingStyle value="Size" />
<maxSizeRollBackups value="10" />
<maximumFileSize value="10240KB" />
<staticLogFileName value="true" />
<countDirection value="1"/>
<threshold value="INFO"/>
<layout type="log4net.Layout.PatternLayout">
<conversionPattern value="%date %level %logger - %message%newline%newline" />
</layout>
<filter type="log4net.Filter.LevelRangeFilter">
<param name="LevelMin" value="INFO"/>
<param name="LevelMax" value="Error"/>
</filter>
</appender>
<appender name="AdoNetAppender" type="log4net.Appender.AdoNetAppender">
<bufferSize value="1"/>
<usetransactions value="false"/>
<connectionType value="System.Data.SqlClient.SqlConnection, System.Data, Version=1.0.3300.0, Culture=neutral, PublicKeyToken=b77a5c561934e089"/>
<connectionStringName value="HaloAutomationLog"/>
<commandText value="INSERT INTO [HaloAMS].[Logging].[ApplicationLog] ([LogDate],[Thread],[LogLevel],[Logger],[LogMessage],[Exception]) VALUES (@log_date, @thread, @log_level, @logger, @message, @exception)"/>
<parameter>
<parameterName value="@log_date"/>
<dbType value="DateTime"/>
<layout type="log4net.Layout.RawTimeStampLayout"/>
</parameter>
<parameter>
<parameterName value="@thread"/>
<dbType value="String"/>
<size value="255"/>
<layout type="log4net.Layout.PatternLayout">
<conversionPattern value="%thread"/>
</layout>
</parameter>
<parameter>
<parameterName value="@log_level"/>
<dbType value="String"/>
<size value="50"/>
<layout type="log4net.Layout.PatternLayout">
<conversionPattern value="%level"/>
</layout>
</parameter>
<parameter>
<parameterName value="@logger"/>
<dbType value="String"/>
<size value="255"/>
<layout type="log4net.Layout.PatternLayout">
<conversionPattern value="%logger"/>
</layout>
</parameter>
<parameter>
<parameterName value="@message"/>
<dbType value="String"/>
<size value="-1"/>
<layout type="log4net.Layout.PatternLayout">
<conversionPattern value="%message"/>
</layout>
</parameter>
<parameter>
<parameterName value="@exception"/>
<dbType value="String"/>
<size value="2000"/>
<layout type="log4net.Layout.ExceptionLayout"/>
</parameter>
</appender>
<root>
<level value="INFO" />
<appender-ref ref="RollingFileAppenderInfoErrorLogger" />
<appender-ref ref="AdoNetAppender"/>
</root>
</log4net>
</configuration>
您可以添加
<reconnectonerror value="True" />
到您的 appender 配置或添加：
ConnectRetryCount=X; //where x is the times you want to reconnection
到您的连接字符串